FS: Tamron 17-50mm f2.8 for Nikon

I am selling my tamron 17-50 f2.8 because i recently bought the sigma 24-70mm 2.8 marco lens which i love. The lens is in excellent condition, it has no scratches externally, however dust somehow got into the lens. There are few dust particles but it doesnt affect the performance, still sharp! It will come with lens, hood, UV filter, and box (with manuls). I lowered the price accodringly to accomodate for lens cleaning. The price for this sharp lens is $320.